Bibliometric and visual analysis of transcranial direct current stimulation in the web of science database from 2000 to 2022 via CiteSpace

Weiming Sun; JingJing Song; Xiangli Dong; Xizhen Kang; Binjun He; Wentao Zhao; Zhaoting Li; Zhen Feng; Xiuping Chen

doi:10.3389/fnhum.2022.1049572

Bibliometric and visual analysis of transcranial direct current stimulation in the web of science database from 2000 to 2022 via CiteSpace

Front Hum Neurosci. 2022 Dec 1:16:1049572. doi: 10.3389/fnhum.2022.1049572. eCollection 2022.

Authors

Weiming Sun^{1

2}, JingJing Song², Xiangli Dong^{2

3}, Xizhen Kang^{1

2}, Binjun He⁴, Wentao Zhao⁵, Zhaoting Li⁴, Zhen Feng^{1

2}, Xiuping Chen^{1

2}

Affiliations

¹ Department of Rehabilitation Medicine, The First Affiliated Hospital of Nanchang University, Nanchang, China.
² Jiangxi Medical College, Nanchang University, Nanchang, China.
³ Department of Psychosomatic Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, China.
⁴ School of Life Science, Nanchang University, Nanchang, China.
⁵ The Third Clinical Department, China Medical University, Shenyang, China.

Abstract

Objective: This study aimed to evaluate the current research hotspots and development tendency of Transcranial Direct Current Stimulation (tDCS) in the field of neurobiology from a bibliometric perspective by providing visualized information to scientists and clinicians.

Materials and methods: Publications related to tDCS published between 2000 and 2022 were retrieved from the Web of Science Core Collection (WOSCC) on May 5, 2022. Bibliometric features including the number of publications and citations, citation frequency, H-index, journal impact factors, and journal citation reports were summarized using Microsoft Office Excel. Co-authorship, citation, co-citation, and co-occurrence analyses among countries, institutions, authors, co-authors, journals, publications, references, and keywords were analyzed and visualized using CiteSpace (version 6.1.R3).

Results: A total of 4,756 publications on tDCS fulfilled the criteria we designed and then were extracted from the WOSCC. The United States (1,190 publications, 25.02%) and Harvard University (185 publications, 3.89%) were the leading contributors among all the countries and institutions, respectively. NITSCHE MA and FREGNI F, two key researchers, have made great achievements in tDCS. Brain Stimulation (306 publications) had the highest number of publications relevant to tDCS and the highest number of citations (4,042 times). In terms of potential hotspots, we observed through reference co-citation analysis timeline viewer related to tDCS that "depression"#0, "Sensorimotor network"#10, "working memory"#11, and "Transcranial magnetic stimulation"#9 might be the future research hotspots, while keywords with the strong burst and still ongoing were "intensity" (2018-2022), "impairment" (2020-2022), "efficacy" (2020-2022), and "guideline" (2020-2022).

Conclusion: This was the first-ever study of peer-reviewed publications relative to tDCS using several scientometric and visual analytic methods to quantitatively and qualitatively reveal the current research status and trends in the field of tDCS. Through the bibliometric method, we gained an in-depth understanding of the current research status and development trend on tDCS. Our research and analysis results might provide some practical sources for academic scholars and clinicians.

Keywords: CiteSpace; bibliometric analysis; research trends; transcranial direct current stimulation; web of science; web of science transcranial direct current stimulation.